Sallah, Tijan M., and Ngozi Okonjo-Iweala, 2003, Chinua Achebe: Teacher of Light (Trenton, New Jersey: Africa World Press). Nigerian critics say that her Harvard education and the amount of time she ...

The Director-General of the World Trade Organization, Ngozi Okonjo-Iweala, has warned that recent tariffs imposed by the United States could significantly affect global trade and economic growth.